I don't think this is particularly substantive ethical system. Suppose god commands or “reveals” to me to do X but I have no intuition that X is good, then I see no reason why I ought to do X. And if I have no reason to do X then doing X is not obligatory.

Remember that moral prescriptions in realist picture are suppose to be universally binding so making good intuitive is bad idea if there is no fact of the matter what people intuitively call good.